The domain within your query sequence starts at position 30 and ends at position 116; the E-value for the 3n0a domain shown below is 4e-54.

DTLKDTSSRVIQSVSSYTKGDLDFTYVTSRIIVMSFPVDSVDIGFRNQVDDIRSFLDSRH
LDHYTVYNLSPKSYRTAKFHSRVSECS

This is a PDB domain - please see the PDBSUM entry of 3n0a for further annotation